Door-lock.



w. YEATES. DOOR LOCK.

APPLICATION FILED APR- lZ. I815- 1,178,983. Patented Apr.11,1916.

W. (I g3? 1, 4 g ww 1' COLUMBIA PLANOGRAPH 60., WASHINGTON, D. c.

P l a, L 5 a 1. i

WILLIAM names, or LONDON, omen- Io, CANADA.

DOOR-LOCK.

Application filed April 12, 1915. Se'rialNo. 20,934.

of the King of Great Britain, have invented certain new and useful Improvements in Door-Locks, of which the following is a specification. V

1 This invention relates to mortise door locks, and my object is to device a lockwhich reduces to a minimum the cutting out of the door and which enables the fitting to be done with a minimum of labor.

I attain my objectbyforming the lock casing as a cylinder in which the bolt slides. The lock spindle actuated by the knobs is set to one side of the cylinder and actuates the bolt by means of a crank. The key-actuated latch for locking the bolt is also set to one side of the cylinder. Theopenings for the cylinder, lock spindle and latch can all be made by boring supplemented by a small amount of chisel work. I

The lock is constructed in detail substantially as hereinafter described and as illustrated in the which y Figure 1 is a rear elevation of my improved lock'in position on a door, parts of the latter being'broken away to expose the lock construction; Fig. 2 a side elevation of the same; Fig. 3 a plan view of the bolt; Fig. 4: a plan view of the lock cylinder; Fig. 5 a rear elevation of a modified form showing the cylinder, bolt and spring only in place on a door; and Fig. 6 is an end view of a modified form of lock cylinder.

In the drawings likenumerals of reference indicate corresponding parts in the different figures.

1 is a face plate to which is secured the cylindrical lock casing 2. The face plate and the casing are preferably formed as an integral casting. The inside of the cylinder is square in cross section so that the bolt 3 may slide therein without rotating. The bolt 3 is shown particularly in Fig. 3. Intermediate its ends the bolt 3 is preferably reduced in width as shown to reduce weight and decrease its bearing in the cylinder. At its rear end a vertical slot 4: is formed. This accompanying drawings in slot is engaged by the pin 5 formed on the are provided as the bolt may be inserted in the cylinder with either side toward the crank according as the bolt is used on a right or left hand opening door.

l The sides of the cylinder are cut out a shown so that space is provided .for the proper operation of the crank in its engage ment with the bolt. The sides of the cylinder may be further cut away to lighten it as shown. Between the end of the cylinder and the end of the bolt is located a coil spring 10, the ends of which are preferably set in recesses in the end of the bolt and the end of the cylinder. This spring serves to project the bolt. ing out too far by means of the pin 11, which is driven through a suitable hole in the cylinder and passes through the slot 12 formed in the bolt. I

The bolt is restrained from mov- The portion of the lock cylinder between the points'markeda and a? in Fig. 4 may be omittedrif desired to reduce weight and to save, cutting away the door stile too much, and the end of thecoil spring 10 allowed to rest in a counterbored hole in the door stile itself as in Fig. 5. For use in these doors the sides of the cylinder may be flattened and the opening in the door formed by boring two smaller holes one above the other and cleaning out the sides with a chisel (see Fig. 6).

As thus far. described, the lock operates simply as a spring latch. To look it against operation from outside except with the use of a key, I provide the following parts: A spindle 13 is journaled transversely of the door in the inner escutcheon and in a bushing 20 fitted in a suitable hole in the door.

.This spindle carries an eccentric 14, which is adapted to engage a headed pin 15 slidable in a hole in the cylinder so that it may be projected into or withdrawn from the hole 16 in the bolt. A bent spring 17 is secured to the lock cylinder and its end is formed to embrace the pin 15. This pin is notched as shown so that the spring will engage it to move it either up or down.

hen the spindle is turned so that the eccentric is down as shown in Fig. 1, the bolt is locked in its protruded position and cannot be actuated by means of the lock spindle 7. To enable the eccentric to be turned to this position from the inner side of the door I provide the inner end. of the spindle 13 with the wing 18, by means of which it may be turned. To look the spindle with the eccentric in this position I provide the hinged latch 19 pivoted on the inner escutcheon and notched to engage either one of the wings 18 as shown to lock the spindle with the eccentric either up or down as may be desired.

From outside the door the spindle may be turned by means of a key, which may be inserted through a hole provided in the door for that purpose. An end-operating key may be employed or any suitable lock combination of known type provided for the key operation of the spindle 13 from outside the door.

It will be seen that this look canbe fitted almost entirely by boring. A hole is bored into the door from the edge to accommodate the lock cylinder. The openings for the lock spindle and for the operation of the crank are easily formed by transverse borings, as also the opening for the spindle 13. The recess for the face plates is almost entirely formed by boring, though some little chisel trimming is of course required to complete the necessary openings. It will be seen that my lock is very simple and that when locked in the position shown in Fig. 1 is absolutely safe from picking from outside.

lVhat I claim as my invention is:

1. In a look, a cylindrical lock casing; a face plate connected therewith; a bolt sliding' therein; a lock spindle to one side of the cylinder and at right angles thereto; a crank on said spindle adapted to actuate said bolt; a latch spindle parallel to the lock spindle having a thumb piece at its inner end; a cam on said spindle; a locking pin slidable in the lock casing and adapted to be depressed by said cam, thebolt being adapted to be engaged by the pin to be locked in extended position; and a spring outside the casing and secured thereto normally holding the pin raised.

2. In a lock, a cylindrical lock casing rectangular internally in cross section and having an opening in each side; a face plate connected therewith; a bolt suitably fitted to slide therein having a vertical slot in each side exposed through the openings in the cylinder, said bolt being reversible; a lock spindle to one side of the cylinder and at right angles thereto; and a crank on said spindle provided with a pin adapted to en gage either of the vertical slots in the bolt.

3. In a. lock, a cylindrical lock casing; a face plate connected therewith; a bolt sliding therein; a lock spindle to one side of the cylinder and at right angles thereto; a crank on said spindle adapted to actuate said bolt; a latch spindle parallel to the lock spindle having a thumb piece at its inner end; and having its outer end adapted to be engaged by a key; a cam on said spindle; a locking pin slidable in the lock casing and adapted to be depressed by said cam, the bolt being adapted by the pin to be locked in extended position; a spring normally holding the pin raised; and a hinged latch adapted to engage the thumb piece to hold the latch spindle' from turning.

4. In a look, a cylindrical lock casing formed of a casting; a face plate integral therewith; a bolt slidable in said casing, the interior of the bolt and casing being shaped to permit of the reversal of the bolt; and a pin slidable in the side of the casing transverse to the bolt, the bolt being shaped for engagement by the pin, in either its normal or reversed positions, to lock said bolt extended and a spring outside the casing and secured thereto normally retracting said pin.

Signed at the city of London Ontario this 29th day of March 1915, in the presence of the two undersigned witnesses.

WILLIAM YEATES.

Witnesses:

' ALEX PURDoM,

Bnssns M. SHORTT.

Copies 01' this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0. 

